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Haier LED TV ' Home Entertainment ' Haier US
www.haier.com/us/products/home-entertainment/led-tv
You are here: Home Products Home Entertainment LED TV. LED TV. The following is haier consultant the be fond of according to you choose products. Newest. Popular / 5.

1- Power off TV2- Unplug TV from outlet3- Press and hold in the power button on the side of the TV for 30 seconds (while it is unplugged from the wall) 4- Release the power button 5- Plug in the TV 6- Power the TV back on

I'm really guessing here - -but while you're in the parental controls screen I believe you can use 0-0-0-0 as a backdoor key. It's different for every manufacturer, Philips uses 0-7-1-1 example. But the users's manual for that TV says that the "default" is 0-0-0-0.. Don't really understand their use of that terminology so it's merely a guess...
But here's something I am really sure of;;;
The owner's manual can be downloaded for free at the Vizio web site: http://www.vizio.com/support/downloads/
and their support line is: 1-888-849-4623 or you can email tech support at: techsupport@vizio.com
Hope this helps.
Good Luck
Bill